Evidence map›Paper›PMID 32840655›Full record

SynthesisWorld journal of urology2021

Polyethylene glycol-based hydrogel rectal spacers for prostate brachytherapy: a systematic review with a focus on technique.

S Vaggers, B P Rai, E C P Chedgy, A de la Taille, B K Somani

Open access · hybridAbstract readSystematic Review
In one paragraph

Synthesis in World journal of urology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed
2.7field-weighted citation impact, top 8% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

19 citing papers in PubMed, 33 citations in OpenAlex.

  1. Trial
  2. Article
  3. Article
  4. Article
  5. Article
  6. Article
  7. Review
  8. Role of rectal spacers in gynecological cancer radiotherapy: reducing rectal dose and treatment-related toxicity.Reports of practical oncology and radiotherapy : journal of Greatpoland Cancer Center in Poznan and Polish Society of Radiation Oncology · 2025
    Review
  9. Article
  10. Review
  11. Article
  12. Article
  13. Article
  14. The case of the missing spacer!Journal of surgical case reports · 2023
    Article
  15. Article
  16. Article
  17. Article
  18. Article
  19. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

5 authors at 3 institutions in 2 countries.

S VaggersUniversity Hospital Southampton NHS Trust, Southampton, UK.
B P RaiFreeman Hospital, Newcastle, UK.
E C P ChedgyUniversity Hospital Southampton NHS Trust, Southampton, UK.
A de la TailleDepartment of Urology, Robotic and Miniinvasive Surgery, Assistance Publique des Hopitaux de Paris, 94000, Créteil, France.
B K SomaniUniversity Hospital Southampton NHS Trust, Southampton, UK. bhaskarsomani@yahoo.com.ORCID http://orcid.org/0000-0002-6248-6478
University Hospital Southampton NHS Foundation Trust · GBAssistance Publique – Hôpitaux de Paris · FRFreeman Hospital · GB

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

introductionRadiation dose to the rectum in prostate brachytherapy (PBT) can be reduced by the use of polyethylene glycol (PEG) hydrogel spacers. This reduces the rate of rectal toxicity and allows dose escalation to the prostate. Our objectives were to provide an overview of technique for injection of a PEG hydrogel spacer, reduction in rectal dosimetry, gastrointestinal toxicity and potential complications.

methodsWe systematically reviewed the role of PEG hydrogel spacers in PBT using the Cochrane and PRISMA methodology for all English-language articles from January 2013 to December 2019. Data was extracted for type of radiotherapy, number of patients, type of PEG-hydrogel used, mean prostate-rectum separation, rectal dosimetry, acute and late GI toxicity, procedure-related complications and the technique used for hydrogel insertion.

resultsNine studies (671 patients and 537 controls) met our inclusion criteria. Of these 4 used DuraSeal

conclusionsPEG hydrogel spacers are safe to insert. Gel insertion is easy, fast and has a low rate of failure. These studies convincingly demonstrate a significant reduction in rectal dosimetry. Although the results of spacers in reducing rectal toxicity is promising, these need to be confirmed in prospective randomised trial.

Indexed as

BrachytherapyHumansHydrogelsInjectionsMalePolyethylene GlycolsProstatic NeoplasmsRadiotherapy DosageHydrogelsPolyethylene GlycolsBrachytherapyCancerDuraSealProstateRadiotherapyRectal spacerSpaceOAR

Identifiers

PMID32840655
PMCPMC8217059
OpenAlexW3080737593

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.